13320434310021 has 48 divisors (see below), whose sum is σ = 21549395177856. Its totient is φ = 7885017474048.

The previous prime is 13320434310017. The next prime is 13320434310031. The reversal of 13320434310021 is 12001343402331.

It is a happy number.

13320434310021 is a `hidden beast` number, since 1 + 3 + 3 + 204 + 3 + 431 + 0 + 0 + 21 = 666.

13320434310021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13320434310021 - 2² = 13320434310017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320434310031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25669755 + ... + 26183528.

It is an arithmetic number, because the mean of its divisors is an integer number (448945732872).

Almost surely, 2^{13320434310021} is an apocalyptic number.

It is an amenable number.

13320434310021 is a deficient number, since it is larger than the sum of its proper divisors (8228960867835).

13320434310021 is a wasteful number, since it uses less digits than its factorization.

13320434310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51853402 (or 51853399 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 13320434310021 its reverse (12001343402331), we get a palindrome (25321777712352).

The spelling of 13320434310021 in words is "thirteen trillion, three hundred twenty billion, four hundred thirty-four million, three hundred ten thousand, twenty-one".